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Diffstat (limited to 'drivers/usb/class/usb-midi.c')
-rw-r--r--drivers/usb/class/usb-midi.c2153
1 files changed, 0 insertions, 2153 deletions
diff --git a/drivers/usb/class/usb-midi.c b/drivers/usb/class/usb-midi.c
deleted file mode 100644
index f13f004d311..00000000000
--- a/drivers/usb/class/usb-midi.c
+++ /dev/null
@@ -1,2153 +0,0 @@
-/*
- usb-midi.c -- USB-MIDI driver
-
- Copyright (C) 2001
- NAGANO Daisuke <breeze.nagano@nifty.ne.jp>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- This driver is based on:
- - 'Universal Serial Bus Device Class Definition for MIDI Device'
- - linux/drivers/sound/es1371.c, linux/drivers/usb/audio.c
- - alsa/lowlevel/pci/cs64xx.c
- - umidi.c for NetBSD
- */
-
-/* ------------------------------------------------------------------------- */
-
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-#include <linux/poll.h>
-#include <linux/sound.h>
-#include <linux/init.h>
-#include <asm/semaphore.h>
-
-#include "usb-midi.h"
-
-/* ------------------------------------------------------------------------- */
-
-/* More verbose on syslog */
-#undef MIDI_DEBUG
-
-#define MIDI_IN_BUFSIZ 1024
-
-#define HAVE_SUPPORT_USB_MIDI_CLASS
-
-#undef HAVE_SUPPORT_ALSA
-
-/* ------------------------------------------------------------------------- */
-
-static int singlebyte = 0;
-module_param(singlebyte, int, 0);
-MODULE_PARM_DESC(singlebyte,"Enable sending MIDI messages with single message packet");
-
-static int maxdevices = 4;
-module_param(maxdevices, int, 0);
-MODULE_PARM_DESC(maxdevices,"Max number of allocatable MIDI device");
-
-static int uvendor = -1;
-module_param(uvendor, int, 0);
-MODULE_PARM_DESC(uvendor, "The USB Vendor ID of a semi-compliant interface");
-
-static int uproduct = -1;
-module_param(uproduct, int, 0);
-MODULE_PARM_DESC(uproduct, "The USB Product ID of a semi-compliant interface");
-
-static int uinterface = -1;
-module_param(uinterface, int, 0);
-MODULE_PARM_DESC(uinterface, "The Interface number of a semi-compliant interface");
-
-static int ualt = -1;
-module_param(ualt, int, 0);
-MODULE_PARM_DESC(ualt, "The optional alternative setting of a semi-compliant interface");
-
-static int umin = -1;
-module_param(umin, int, 0);
-MODULE_PARM_DESC(umin, "The input endpoint of a semi-compliant interface");
-
-static int umout = -1;
-module_param(umout, int, 0);
-MODULE_PARM_DESC(umout, "The output endpoint of a semi-compliant interface");
-
-static int ucable = -1;
-module_param(ucable, int, 0);
-MODULE_PARM_DESC(ucable, "The cable number used for a semi-compliant interface");
-
-/** Note -- the usb_string() returns only Latin-1 characters.
- * (unicode chars <= 255). To support Japanese, a unicode16LE-to-EUC or
- * unicode16LE-to-JIS routine is needed to wrap around usb_get_string().
- **/
-static unsigned short ulangid = 0x0409; /** 0x0411 for Japanese **/
-module_param(ulangid, ushort, 0);
-MODULE_PARM_DESC(ulangid, "The optional preferred USB Language ID for all devices");
-
-MODULE_AUTHOR("NAGANO Daisuke <breeze.nagano@nifty.ne.jp>");
-MODULE_DESCRIPTION("USB-MIDI driver");
-MODULE_LICENSE("GPL");
-
-/* ------------------------------------------------------------------------- */
-
-/** MIDIStreaming Class-Specific Interface Descriptor Subtypes **/
-
-#define MS_DESCRIPTOR_UNDEFINED 0
-#define MS_HEADER 1
-#define MIDI_IN_JACK 2
-#define MIDI_OUT_JACK 3
-/* Spec reads: ELEMENT */
-#define ELEMENT_DESCRIPTOR 4
-
-#define MS_HEADER_LENGTH 7
-
-/** MIDIStreaming Class-Specific Endpoint Descriptor Subtypes **/
-
-#define DESCRIPTOR_UNDEFINED 0
-/* Spec reads: MS_GENERAL */
-#define MS_GENERAL_ENDPOINT 1
-
-/** MIDIStreaming MIDI IN and OUT Jack Types **/
-
-#define JACK_TYPE_UNDEFINED 0
-/* Spec reads: EMBEDDED */
-#define EMBEDDED_JACK 1
-/* Spec reads: EXTERNAL */
-#define EXTERNAL_JACK 2
-
-
-/* structure summary
-
- usb_midi_state usb_device
- | |
- *| *| per ep
- in_ep out_ep
- | |
- *| *| per cable
- min mout
- | | (cable to device pairing magic)
- | |
- usb_midi_dev dev_id (major,minor) == file->private_data
-
-*/
-
-/* usb_midi_state: corresponds to a USB-MIDI module */
-struct usb_midi_state {
- struct list_head mididev;
-
- struct usb_device *usbdev;
-
- struct list_head midiDevList;
- struct list_head inEndpointList;
- struct list_head outEndpointList;
-
- spinlock_t lock;
-
- unsigned int count; /* usage counter */
-};
-
-/* midi_out_endpoint: corresponds to an output endpoint */
-struct midi_out_endpoint {
- struct list_head list;
-
- struct usb_device *usbdev;
- int endpoint;
- spinlock_t lock;
- wait_queue_head_t wait;
-
- unsigned char *buf;
- int bufWrPtr;
- int bufSize;
-
- struct urb *urb;
-};
-
-/* midi_in_endpoint: corresponds to an input endpoint */
-struct midi_in_endpoint {
- struct list_head list;
-
- struct usb_device *usbdev;
- int endpoint;
- spinlock_t lock;
- wait_queue_head_t wait;
-
- struct usb_mididev *cables[16]; // cables open for read
- int readers; // number of cables open for read
-
- struct urb *urb;
- unsigned char *recvBuf;
- int recvBufSize;
- int urbSubmitted; //FIXME: == readers > 0
-};
-
-/* usb_mididev: corresponds to a logical device */
-struct usb_mididev {
- struct list_head list;
-
- struct usb_midi_state *midi;
- int dev_midi;
- mode_t open_mode;
-
- struct {
- struct midi_in_endpoint *ep;
- int cableId;
-
-// as we are pushing data from usb_bulk_read to usb_midi_read,
-// we need a larger, cyclic buffer here.
- unsigned char buf[MIDI_IN_BUFSIZ];
- int bufRdPtr;
- int bufWrPtr;
- int bufRemains;
- } min;
-
- struct {
- struct midi_out_endpoint *ep;
- int cableId;
-
- unsigned char buf[3];
- int bufPtr;
- int bufRemains;
-
- int isInExclusive;
- unsigned char lastEvent;
- } mout;
-
- int singlebyte;
-};
-
-/** Map the high nybble of MIDI voice messages to number of Message bytes.
- * High nyble ranges from 0x8 to 0xe
- */
-
-static int remains_80e0[] = {
- 3, /** 0x8X Note Off **/
- 3, /** 0x9X Note On **/
- 3, /** 0xAX Poly-key pressure **/
- 3, /** 0xBX Control Change **/
- 2, /** 0xCX Program Change **/
- 2, /** 0xDX Channel pressure **/
- 3 /** 0xEX PitchBend Change **/
-};
-
-/** Map the messages to a number of Message bytes.
- *
- **/
-static int remains_f0f6[] = {
- 0, /** 0xF0 **/
- 2, /** 0XF1 **/
- 3, /** 0XF2 **/
- 2, /** 0XF3 **/
- 2, /** 0XF4 (Undefined by MIDI Spec, and subject to change) **/
- 2, /** 0XF5 (Undefined by MIDI Spec, and subject to change) **/
- 1 /** 0XF6 **/
-};
-
-/** Map the messages to a CIN (Code Index Number).
- *
- **/
-static int cin_f0ff[] = {
- 4, /** 0xF0 System Exclusive Message Start (special cases may be 6 or 7) */
- 2, /** 0xF1 **/
- 3, /** 0xF2 **/
- 2, /** 0xF3 **/
- 2, /** 0xF4 **/
- 2, /** 0xF5 **/
- 5, /** 0xF6 **/
- 5, /** 0xF7 End of System Exclusive Message (May be 6 or 7) **/
- 5, /** 0xF8 **/
- 5, /** 0xF9 **/
- 5, /** 0xFA **/
- 5, /** 0xFB **/
- 5, /** 0xFC **/
- 5, /** 0xFD **/
- 5, /** 0xFE **/
- 5 /** 0xFF **/
-};
-
-/** Map MIDIStreaming Event packet Code Index Number (low nybble of byte 0)
- * to the number of bytes of valid MIDI data.
- *
- * CIN of 0 and 1 are NOT USED in MIDIStreaming 1.0.
- *
- **/
-static int cin_to_len[] = {
- 0, 0, 2, 3,
- 3, 1, 2, 3,
- 3, 3, 3, 3,
- 2, 2, 3, 1
-};
-
-
-/* ------------------------------------------------------------------------- */
-
-static struct list_head mididevs = LIST_HEAD_INIT(mididevs);
-
-static DECLARE_MUTEX(open_sem);
-static DECLARE_WAIT_QUEUE_HEAD(open_wait);
-
-
-/* ------------------------------------------------------------------------- */
-
-static void usb_write_callback(struct urb *urb, struct pt_regs *regs)
-{
- struct midi_out_endpoint *ep = (struct midi_out_endpoint *)urb->context;
-
- if ( waitqueue_active( &ep->wait ) )
- wake_up_interruptible( &ep->wait );
-}
-
-
-static int usb_write( struct midi_out_endpoint *ep, unsigned char *buf, int len )
-{
- struct usb_device *d;
- int pipe;
- int ret = 0;
- int status;
- int maxretry = 50;
-
- DECLARE_WAITQUEUE(wait,current);
- init_waitqueue_head(&ep->wait);
-
- d = ep->usbdev;
- pipe = usb_sndbulkpipe(d, ep->endpoint);
- usb_fill_bulk_urb( ep->urb, d, pipe, (unsigned char*)buf, len,
- usb_write_callback, ep );
-
- status = usb_submit_urb(ep->urb, GFP_KERNEL);
-
- if (status) {
- printk(KERN_ERR "usbmidi: Cannot submit urb (%d)\n",status);
- ret = -EIO;
- goto error;
- }
-
- add_wait_queue( &ep->wait, &wait );
- set_current_state( TASK_INTERRUPTIBLE );
-
- while( ep->urb->status == -EINPROGRESS ) {
- if ( maxretry-- < 0 ) {
- printk(KERN_ERR "usbmidi: usb_bulk_msg timed out\n");
- ret = -ETIME;
- break;
- }
- interruptible_sleep_on_timeout( &ep->wait, 10 );
- }
- set_current_state( TASK_RUNNING );
- remove_wait_queue( &ep->wait, &wait );
-
-error:
- return ret;
-}
-
-
-/** Copy data from URB to In endpoint buf.
- * Discard if CIN == 0 or CIN = 1.
- *
- *
- **/
-
-static void usb_bulk_read(struct urb *urb, struct pt_regs *regs)
-{
- struct midi_in_endpoint *ep = (struct midi_in_endpoint *)(urb->context);
- unsigned char *data = urb->transfer_buffer;
- int i, j, wake;
-
- if ( !ep->urbSubmitted ) {
- return;
- }
-
- if ( (urb->status == 0) && (urb->actual_length > 0) ) {
- wake = 0;
- spin_lock( &ep->lock );
-
- for(j = 0; j < urb->actual_length; j += 4) {
- int cin = (data[j]>>0)&0xf;
- int cab = (data[j]>>4)&0xf;
- struct usb_mididev *cable = ep->cables[cab];
- if ( cable ) {
- int len = cin_to_len[cin]; /** length of MIDI data **/
- for (i = 0; i < len; i++) {
- cable->min.buf[cable->min.bufWrPtr] = data[1+i+j];
- cable->min.bufWrPtr = (cable->min.bufWrPtr+1)%MIDI_IN_BUFSIZ;
- if (cable->min.bufRemains < MIDI_IN_BUFSIZ)
- cable->min.bufRemains += 1;
- else /** need to drop data **/
- cable->min.bufRdPtr += (cable->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
- wake = 1;
- }
- }
- }
-
- spin_unlock ( &ep->lock );
- if ( wake ) {
- wake_up( &ep->wait );
- }
- }
-
- /* urb->dev must be reinitialized on 2.4.x kernels */
- urb->dev = ep->usbdev;
-
- urb->actual_length = 0;
- usb_submit_urb(urb, GFP_ATOMIC);
-}
-
-
-
-/* ------------------------------------------------------------------------- */
-
-/* This routine must be called with spin_lock */
-
-/** Wrapper around usb_write().
- * This routine must be called with spin_lock held on ep.
- * Called by midiWrite(), putOneMidiEvent(), and usb_midi_write();
- **/
-static int flush_midi_buffer( struct midi_out_endpoint *ep )
-{
- int ret=0;
-
- if ( ep->bufWrPtr > 0 ) {
- ret = usb_write( ep, ep->buf, ep->bufWrPtr );
- ep->bufWrPtr = 0;
- }
-
- return ret;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-
-/** Given a MIDI Event, determine size of data to be attached to
- * USB-MIDI packet.
- * Returns 1, 2 or 3.
- * Called by midiWrite();
- * Uses remains_80e0 and remains_f0f6;
- **/
-static int get_remains(int event)
-{
- int ret;
-
- if ( event < 0x80 ) {
- ret = 1;
- } else if ( event < 0xf0 ) {
- ret = remains_80e0[((event-0x80)>>4)&0x0f];
- } else if ( event < 0xf7 ) {
- ret = remains_f0f6[event-0xf0];
- } else {
- ret = 1;
- }
-
- return ret;
-}
-
-/** Given the output MIDI data in the output buffer, computes a reasonable
- * CIN.
- * Called by putOneMidiEvent().
- **/
-static int get_CIN( struct usb_mididev *m )
-{
- int cin;
-
- if ( m->mout.buf[0] == 0xf7 ) {
- cin = 5;
- }
- else if ( m->mout.buf[1] == 0xf7 ) {
- cin = 6;
- }
- else if ( m->mout.buf[2] == 0xf7 ) {
- cin = 7;
- }
- else {
- if ( m->mout.isInExclusive == 1 ) {
- cin = 4;
- } else if ( m->mout.buf[0] < 0x80 ) {
- /** One byte that we know nothing about. **/
- cin = 0xF;
- } else if ( m->mout.buf[0] < 0xf0 ) {
- /** MIDI Voice messages 0x8X to 0xEX map to cin 0x8 to 0xE. **/
- cin = (m->mout.buf[0]>>4)&0x0f;
- }
- else {
- /** Special lookup table exists for real-time events. **/
- cin = cin_f0ff[m->mout.buf[0]-0xf0];
- }
- }
-
- return cin;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-
-
-/** Move data to USB endpoint buffer.
- *
- **/
-static int put_one_midi_event(struct usb_mididev *m)
-{
- int cin;
- unsigned long flags;
- struct midi_out_endpoint *ep = m->mout.ep;
- int ret=0;
-
- cin = get_CIN( m );
- if ( cin > 0x0f || cin < 0 ) {
- return -EINVAL;
- }
-
- spin_lock_irqsave( &ep->lock, flags );
- ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | cin;
- ep->buf[ep->bufWrPtr++] = m->mout.buf[0];
- ep->buf[ep->bufWrPtr++] = m->mout.buf[1];
- ep->buf[ep->bufWrPtr++] = m->mout.buf[2];
- if ( ep->bufWrPtr >= ep->bufSize ) {
- ret = flush_midi_buffer( ep );
- }
- spin_unlock_irqrestore( &ep->lock, flags);
-
- m->mout.buf[0] = m->mout.buf[1] = m->mout.buf[2] = 0;
- m->mout.bufPtr = 0;
-
- return ret;
-}
-
-/** Write the MIDI message v on the midi device.
- * Called by usb_midi_write();
- * Responsible for packaging a MIDI data stream into USB-MIDI packets.
- **/
-
-static int midi_write( struct usb_mididev *m, int v )
-{
- unsigned long flags;
- struct midi_out_endpoint *ep = m->mout.ep;
- int ret=0;
- unsigned char c = (unsigned char)v;
- unsigned char sysrt_buf[4];
-
- if ( m->singlebyte != 0 ) {
- /** Simple code to handle the single-byte USB-MIDI protocol. */
- spin_lock_irqsave( &ep->lock, flags );
- if ( ep->bufWrPtr+4 > ep->bufSize ) {
- ret = flush_midi_buffer( ep );
- if ( !ret ) {
- spin_unlock_irqrestore( &ep->lock, flags );
- return ret;
- }
- }
- ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | 0x0f; /* single byte */
- ep->buf[ep->bufWrPtr++] = c;
- ep->buf[ep->bufWrPtr++] = 0;
- ep->buf[ep->bufWrPtr++] = 0;
- if ( ep->bufWrPtr >= ep->bufSize ) {
- ret = flush_midi_buffer( ep );
- }
- spin_unlock_irqrestore( &ep->lock, flags );
-
- return ret;
- }
- /** Normal USB-MIDI protocol begins here. */
-
- if ( c > 0xf7 ) { /* system: Realtime messages */
- /** Realtime messages are written IMMEDIATELY. */
- sysrt_buf[0] = (m->mout.cableId<<4) | 0x0f;
- sysrt_buf[1] = c;
- sysrt_buf[2] = 0;
- sysrt_buf[3] = 0;
- spin_lock_irqsave( &ep->lock, flags );
- ret = usb_write( ep, sysrt_buf, 4 );
- spin_unlock_irqrestore( &ep->lock, flags );
- /* m->mout.lastEvent = 0; */
-
- return ret;
- }
-
- if ( c >= 0x80 ) {
- if ( c < 0xf0 ) {
- m->mout.lastEvent = c;
- m->mout.isInExclusive = 0;
- m->mout.bufRemains = get_remains(c);
- } else if ( c == 0xf0 ) {
- /* m->mout.lastEvent = 0; */
- m->mout.isInExclusive = 1;
- m->mout.bufRemains = get_remains(c);
- } else if ( c == 0xf7 && m->mout.isInExclusive == 1 ) {
- /* m->mout.lastEvent = 0; */
- m->mout.isInExclusive = 0;
- m->mout.bufRemains = 1;
- } else if ( c > 0xf0 ) {
- /* m->mout.lastEvent = 0; */
- m->mout.isInExclusive = 0;
- m->mout.bufRemains = get_remains(c);
- }
-
- } else if ( m->mout.bufRemains == 0 && m->mout.isInExclusive == 0 ) {
- if ( m->mout.lastEvent == 0 ) {
- return 0; /* discard, waiting for the first event */
- }
- /** track status **/
- m->mout.buf[0] = m->mout.lastEvent;
- m->mout.bufPtr = 1;
- m->mout.bufRemains = get_remains(m->mout.lastEvent)-1;
- }
-
- m->mout.buf[m->mout.bufPtr++] = c;
- m->mout.bufRemains--;
- if ( m->mout.bufRemains == 0 || m->mout.bufPtr >= 3) {
- ret = put_one_midi_event(m);
- }
-
- return ret;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract: Used to change the current read/write position in a file.
- * On success, the non-negative position is reported.
- * On failure, the negative of an error code is reported.
- *
- * Because a MIDIStream is not a file, all seek operations are doomed to fail.
- *
- **/
-static loff_t usb_midi_llseek(struct file *file, loff_t offset, int origin)
-{
- /** Tell user you cannot seek on a PIPE-like device. **/
- return -ESPIPE;
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract: Block until count bytes have been read or an error occurs.
- *
- **/
-
-static ssize_t usb_midi_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
-{
- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
- struct midi_in_endpoint *ep = m->min.ep;
- ssize_t ret;
- DECLARE_WAITQUEUE(wait, current);
-
- if ( !access_ok(VERIFY_READ, buffer, count) ) {
- return -EFAULT;
- }
- if ( count == 0 ) {
- return 0;
- }
-
- add_wait_queue( &ep->wait, &wait );
- ret = 0;
- while( count > 0 ) {
- int cnt;
- int d = (int)count;
-
- cnt = m->min.bufRemains;
- if ( cnt > d ) {
- cnt = d;
- }
-
- if ( cnt <= 0 ) {
- if ( file->f_flags & O_NONBLOCK ) {
- if (!ret)
- ret = -EAGAIN;
- break;
- }
- __set_current_state(TASK_INTERRUPTIBLE);
- schedule();
- if (signal_pending(current)) {
- if(!ret)
- ret=-ERESTARTSYS;
- break;
- }
- continue;
- }
-
- {
- int i;
- unsigned long flags; /* used to synchronize access to the endpoint */
- spin_lock_irqsave( &ep->lock, flags );
- for (i = 0; i < cnt; i++) {
- if ( copy_to_user( buffer+i, m->min.buf+m->min.bufRdPtr, 1 ) ) {
- if ( !ret )
- ret = -EFAULT;
- break;
- }
- m->min.bufRdPtr = (m->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
- m->min.bufRemains -= 1;
- }
- spin_unlock_irqrestore( &ep->lock, flags );
- }
-
- count-=cnt;
- buffer+=cnt;
- ret+=cnt;
-
- break;
- }
-
- remove_wait_queue( &ep->wait, &wait );
- set_current_state(TASK_RUNNING);
-
- return ret;
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic Contract: Take MIDI data byte-by-byte and pass it to
- * writeMidi() which packages MIDI data into USB-MIDI stream.
- * Then flushMidiData() is called to ensure all bytes have been written
- * in a timely fashion.
- *
- **/
-
-static ssize_t usb_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
-{
- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
- ssize_t ret;
- unsigned long int flags;
-
- if ( !access_ok(VERIFY_READ, buffer, count) ) {
- return -EFAULT;
- }
- if ( count == 0 ) {
- return 0;
- }
-
- ret = 0;
- while( count > 0 ) {
- unsigned char c;
-
- if (copy_from_user((unsigned char *)&c, buffer, 1)) {
- if ( ret == 0 )
- ret = -EFAULT;
- break;
- }
- if( midi_write(m, (int)c) ) {
- if ( ret == 0 )
- ret = -EFAULT;
- break;
- }
- count--;
- buffer++;
- ret++;
- }
-
- spin_lock_irqsave( &m->mout.ep->lock, flags );
- if ( flush_midi_buffer(m->mout.ep) < 0 ) {
- ret = -EFAULT;
- }
- spin_unlock_irqrestore( &m->mout.ep->lock, flags );
-
- return ret;
-}
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract: Wait (spin) until ready to read or write on the file.
- *
- **/
-static unsigned int usb_midi_poll(struct file *file, struct poll_table_struct *wait)
-{
- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
- struct midi_in_endpoint *iep = m->min.ep;
- struct midi_out_endpoint *oep = m->mout.ep;
- unsigned long flags;
- unsigned int mask = 0;
-
- if ( file->f_mode & FMODE_READ ) {
- poll_wait( file, &iep->wait, wait );
- spin_lock_irqsave( &iep->lock, flags );
- if ( m->min.bufRemains > 0 )
- mask |= POLLIN | POLLRDNORM;
- spin_unlock_irqrestore( &iep->lock, flags );
- }
-
- if ( file->f_mode & FMODE_WRITE ) {
- poll_wait( file, &oep->wait, wait );
- spin_lock_irqsave( &oep->lock, flags );
- if ( oep->bufWrPtr < oep->bufSize )
- mask |= POLLOUT | POLLWRNORM;
- spin_unlock_irqrestore( &oep->lock, flags );
- }
-
- return mask;
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract: This is always the first operation performed on the
- * device node. If no method is defined, the open succeeds without any
- * notification given to the module.
- *
- **/
-
-static int usb_midi_open(struct inode *inode, struct file *file)
-{
- int minor = iminor(inode);
- DECLARE_WAITQUEUE(wait, current);
- struct usb_midi_state *s;
- struct usb_mididev *m;
- unsigned long flags;
- int succeed = 0;
-
-#if 0
- printk(KERN_INFO "usb-midi: Open minor= %d.\n", minor);
-#endif
-
- for(;;) {
- down(&open_sem);
- list_for_each_entry(s, &mididevs, mididev) {
- list_for_each_entry(m, &s->midiDevList, list) {
- if ( !((m->dev_midi ^ minor) & ~0xf) )
- goto device_found;
- }
- }
- up(&open_sem);
- return -ENODEV;
-
- device_found:
- if ( !s->usbdev ) {
- up(&open_sem);
- return -EIO;
- }
- if ( !(m->open_mode & file->f_mode) ) {
- break;
- }
- if ( file->f_flags & O_NONBLOCK ) {
- up(&open_sem);
- return -EBUSY;
- }
- __set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue( &open_wait, &wait );
- up(&open_sem);
- schedule();
- remove_wait_queue( &open_wait, &wait );
- if ( signal_pending(current) ) {
- return -ERESTARTSYS;
- }
- }
-
- file->private_data = m;
- spin_lock_irqsave( &s->lock, flags );
-
- if ( !(m->open_mode & (FMODE_READ | FMODE_WRITE)) ) {
- //FIXME: intented semantics unclear here
- m->min.bufRdPtr = 0;
- m->min.bufWrPtr = 0;
- m->min.bufRemains = 0;
- spin_lock_init(&m->min.ep->lock);
-
- m->mout.bufPtr = 0;
- m->mout.bufRemains = 0;
- m->mout.isInExclusive = 0;
- m->mout.lastEvent = 0;
- spin_lock_init(&m->mout.ep->lock);
- }
-
- if ( (file->f_mode & FMODE_READ) && m->min.ep != NULL ) {
- unsigned long int flagsep;
- spin_lock_irqsave( &m->min.ep->lock, flagsep );
- m->min.ep->cables[m->min.cableId] = m;
- m->min.ep->readers += 1;
- m->min.bufRdPtr = 0;
- m->min.bufWrPtr = 0;
- m->min.bufRemains = 0;
- spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
-
- if ( !(m->min.ep->urbSubmitted)) {
-
- /* urb->dev must be reinitialized on 2.4.x kernels */
- m->min.ep->urb->dev = m->min.ep->usbdev;
-
- if ( usb_submit_urb(m->min.ep->urb, GFP_ATOMIC) ) {
- printk(KERN_ERR "usbmidi: Cannot submit urb for MIDI-IN\n");
- }
- m->min.ep->urbSubmitted = 1;
- }
- m->open_mode |= FMODE_READ;
- succeed = 1;
- }
-
- if ( (file->f_mode & FMODE_WRITE) && m->mout.ep != NULL ) {
- m->mout.bufPtr = 0;
- m->mout.bufRemains = 0;
- m->mout.isInExclusive = 0;
- m->mout.lastEvent = 0;
- m->open_mode |= FMODE_WRITE;
- succeed = 1;
- }
-
- spin_unlock_irqrestore( &s->lock, flags );
-
- s->count++;
- up(&open_sem);
-
- /** Changed to prevent extra increments to USE_COUNT. **/
- if (!succeed) {
- return -EBUSY;
- }
-
-#if 0
- printk(KERN_INFO "usb-midi: Open Succeeded. minor= %d.\n", minor);
-#endif
-
- return nonseekable_open(inode, file); /** Success. **/
-}
-
-
-/** Basic operation on /dev/midiXX as registered through struct file_operations.
- *
- * Basic contract: Close an opened file and deallocate anything we allocated.
- * Like open(), this can be missing. If open set file->private_data,
- * release() must clear it.
- *
- **/
-
-static int usb_midi_release(struct inode *inode, struct file *file)
-{
- struct usb_mididev *m = (struct usb_mididev *)file->private_data;
- struct usb_midi_state *s = (struct usb_midi_state *)m->midi;
-
-#if 0
- printk(KERN_INFO "usb-midi: Close.\n");
-#endif
-
- down(&open_sem);
-
- if ( m->open_mode & FMODE_WRITE ) {
- m->open_mode &= ~FMODE_WRITE;
- usb_kill_urb( m->mout.ep->urb );
- }
-
- if ( m->open_mode & FMODE_READ ) {
- unsigned long int flagsep;
- spin_lock_irqsave( &m->min.ep->lock, flagsep );
- m->min.ep->cables[m->min.cableId] = NULL; // discard cable
- m->min.ep->readers -= 1;
- m->open_mode &= ~FMODE_READ;
- if ( m->min.ep->readers == 0 &&
- m->min.ep->urbSubmitted ) {
- m->min.ep->urbSubmitted = 0;
- usb_kill_urb(m->min.ep->urb);
- }
- spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
- }
-
- s->count--;
-
- up(&open_sem);
- wake_up(&open_wait);
-
- file->private_data = NULL;
- return 0;
-}
-
-static struct file_operations usb_midi_fops = {
- .owner = THIS_MODULE,
- .llseek = usb_midi_llseek,
- .read = usb_midi_read,
- .write = usb_midi_write,
- .poll = usb_midi_poll,
- .open = usb_midi_open,
- .release = usb_midi_release,
-};
-
-/* ------------------------------------------------------------------------- */
-
-/** Returns filled midi_in_endpoint structure or null on failure.
- *
- * Parameters:
- * d - a usb_device
- * endPoint - An usb endpoint in the range 0 to 15.
- * Called by allocUsbMidiDev();
- *
- **/
-
-static struct midi_in_endpoint *alloc_midi_in_endpoint( struct usb_device *d, int endPoint )
-{
- struct midi_in_endpoint *ep;
- int bufSize;
- int pipe;
-
- endPoint &= 0x0f; /* Silently force endPoint to lie in range 0 to 15. */
-
- pipe = usb_rcvbulkpipe( d, endPoint );
- bufSize = usb_maxpacket( d, pipe, 0 );
- /* usb_pipein() = ! usb_pipeout() = true for an in Endpoint */
-
- ep = (struct midi_in_endpoint *)kmalloc(sizeof(struct midi_in_endpoint), GFP_KERNEL);
- if ( !ep ) {
- printk(KERN_ERR "usbmidi: no memory for midi in-endpoint\n");
- return NULL;
- }
- memset( ep, 0, sizeof(struct midi_in_endpoint) );
-// this sets cables[] and readers to 0, too.
-// for (i=0; i<16; i++) ep->cables[i] = 0; // discard cable
-// ep->readers = 0;
-
- ep->endpoint = endPoint;
-
- ep->recvBuf = (unsigned char *)kmalloc(sizeof(unsigned char)*(bufSize), GFP_KERNEL);
- if ( !ep->recvBuf ) {
- printk(KERN_ERR "usbmidi: no memory for midi in-endpoint buffer\n");
- kfree(ep);
- return NULL;
- }
-
- ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
- if ( !ep->urb ) {
- printk(KERN_ERR "usbmidi: no memory for midi in-endpoint urb\n");
- kfree(ep->recvBuf);
- kfree(ep);
- return NULL;
- }
- usb_fill_bulk_urb( ep->urb, d,
- usb_rcvbulkpipe(d, endPoint),
- (unsigned char *)ep->recvBuf, bufSize,
- usb_bulk_read, ep );
-
- /* ep->bufRdPtr = 0; */
- /* ep->bufWrPtr = 0; */
- /* ep->bufRemains = 0; */
- /* ep->urbSubmitted = 0; */
- ep->recvBufSize = bufSize;
-
- init_waitqueue_head(&ep->wait);
-
- return ep;
-}
-
-static int remove_midi_in_endpoint( struct midi_in_endpoint *min )
-{
- usb_kill_urb( min->urb );
- usb_free_urb( min->urb );
- kfree( min->recvBuf );
- kfree( min );
-
- return 0;
-}
-
-/** Returns filled midi_out_endpoint structure or null on failure.
- *
- * Parameters:
- * d - a usb_device
- * endPoint - An usb endpoint in the range 0 to 15.
- * Called by allocUsbMidiDev();
- *
- **/
-static struct midi_out_endpoint *alloc_midi_out_endpoint( struct usb_device *d, int endPoint )
-{
- struct midi_out_endpoint *ep = NULL;
- int pipe;
- int bufSize;
-
- endPoint &= 0x0f;
- pipe = usb_sndbulkpipe( d, endPoint );
- bufSize = usb_maxpacket( d, pipe, 1 );
-
- ep = (struct midi_out_endpoint *)kmalloc(sizeof(struct midi_out_endpoint), GFP_KERNEL);
- if ( !ep ) {
- printk(KERN_ERR "usbmidi: no memory for midi out-endpoint\n");
- return NULL;
- }
- memset( ep, 0, sizeof(struct midi_out_endpoint) );
-
- ep->endpoint = endPoint;
- ep->buf = (unsigned char *)kmalloc(sizeof(unsigned char)*bufSize, GFP_KERNEL);
- if ( !ep->buf ) {
- printk(KERN_ERR "usbmidi: no memory for midi out-endpoint buffer\n");
- kfree(ep);
- return NULL;
- }
-
- ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
- if ( !ep->urb ) {
- printk(KERN_ERR "usbmidi: no memory for midi out-endpoint urb\n");
- kfree(ep->buf);
- kfree(ep);
- return NULL;
- }
-
- ep->bufSize = bufSize;
- /* ep->bufWrPtr = 0; */
-
- init_waitqueue_head(&ep->wait);
-
- return ep;
-}
-
-
-static int remove_midi_out_endpoint( struct midi_out_endpoint *mout )
-{
- usb_kill_urb( mout->urb );
- usb_free_urb( mout->urb );
- kfree( mout->buf );
- kfree( mout );
-
- return 0;
-}
-
-
-/** Returns a filled usb_mididev structure, registered as a Linux MIDI device.
- *
- * Returns null if memory is not available or the device cannot be registered.
- * Called by allocUsbMidiDev();
- *
- **/
-static struct usb_mididev *allocMidiDev(
- struct usb_midi_state *s,
- struct midi_in_endpoint *min,
- struct midi_out_endpoint *mout,
- int inCableId,
- int outCableId )
-{
- struct usb_mididev *m;
-
- m = (struct usb_mididev *)kmalloc(sizeof(struct usb_mididev), GFP_KERNEL);
- if (!m) {
- printk(KERN_ERR "usbmidi: no memory for midi device\n");
- return NULL;
- }
-
- memset(m, 0, sizeof(struct usb_mididev));
-
- if ((m->dev_midi = register_sound_midi(&usb_midi_fops, -1)) < 0) {
- printk(KERN_ERR "usbmidi: cannot register midi device\n");
- kfree(m);
- return NULL;
- }
-
- m->midi = s;
- /* m->open_mode = 0; */
-
- if ( min ) {
- m->min.ep = min;
- m->min.ep->usbdev = s->usbdev;
- m->min.cableId = inCableId;
- }
- /* m->min.bufPtr = 0; */
- /* m->min.bufRemains = 0; */
-
- if ( mout ) {
- m->mout.ep = mout;
- m->mout.ep->usbdev = s->usbdev;
- m->mout.cableId = outCableId;
- }
- /* m->mout.bufPtr = 0; */
- /* m->mout.bufRemains = 0; */
- /* m->mout.isInExclusive = 0; */
- /* m->mout.lastEvent = 0; */
-
- m->singlebyte = singlebyte;
-
- return m;
-}
-
-
-static void release_midi_device( struct usb_midi_state *s )
-{
- struct usb_mididev *m;
- struct midi_in_endpoint *min;
- struct midi_out_endpoint *mout;
-
- if ( s->count > 0 ) {
- up(&open_sem);
- return;
- }
- up( &open_sem );
- wake_up( &open_wait );
-
- while(!list_empty(&s->inEndpointList)) {
- min = list_entry(s->inEndpointList.next, struct midi_in_endpoint, list);
- list_del(&min->list);
- remove_midi_in_endpoint(min);
- }
-
- while(!list_empty(&s->outEndpointList)) {
- mout = list_entry(s->outEndpointList.next, struct midi_out_endpoint, list);
- list_del(&mout->list);
- remove_midi_out_endpoint(mout);
- }
-
- while(!list_empty(&s->midiDevList)) {
- m = list_entry(s->midiDevList.next, struct usb_mididev, list);
- list_del(&m->list);
- kfree(m);
- }
-
- kfree(s);
-
- return;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-/** Utility routine to find a descriptor in a dump of many descriptors.
- * Returns start of descriptor or NULL if not found.
- * descStart pointer to list of interfaces.
- * descLength length (in bytes) of dump
- * after (ignored if NULL) this routine returns only descriptors after "after"
- * dtype (mandatory) The descriptor type.
- * iface (ignored if -1) returns descriptor at/following given interface
- * altSetting (ignored if -1) returns descriptor at/following given altSetting
- *
- *
- * Called by parseDescriptor(), find_csinterface_descriptor();
- *
- */
-static void *find_descriptor( void *descStart, unsigned int descLength, void *after, unsigned char dtype, int iface, int altSetting )
-{
- unsigned char *p, *end, *next;
- int interfaceNumber = -1, altSet = -1;
-
- p = descStart;
- end = p + descLength;
- for( ; p < end; ) {
- if ( p[0] < 2 )
- return NULL;
- next = p + p[0];
- if ( next > end )
- return NULL;
- if ( p[1] == USB_DT_INTERFACE ) {
- if ( p[0] < USB_DT_INTERFACE_SIZE )
- return NULL;
- interfaceNumber = p[2];
- altSet = p[3];
- }
- if ( p[1] == dtype &&
- ( !after || ( p > (unsigned char *)after) ) &&
- ( ( iface == -1) || (iface == interfaceNumber) ) &&
- ( (altSetting == -1) || (altSetting == altSet) )) {
- return p;
- }
- p = next;
- }
- return NULL;
-}
-
-/** Utility to find a class-specific interface descriptor.
- * dsubtype is a descriptor subtype
- * Called by parseDescriptor();
- **/
-static void *find_csinterface_descriptor(void *descStart, unsigned int descLength, void *after, u8 dsubtype, int iface, int altSetting)
-{
- unsigned char *p;
-
- p = find_descriptor( descStart, descLength, after, USB_DT_CS_INTERFACE, iface, altSetting );
- while ( p ) {
- if ( p[0] >= 3 && p[2] == dsubtype )
- return p;
- p = find_descriptor( descStart, descLength, p, USB_DT_CS_INTERFACE,
- iface, altSetting );
- }
- return NULL;
-}
-
-
-/** The magic of making a new usb_midi_device from config happens here.
- *
- * The caller is responsible for free-ing this return value (if not NULL).
- *
- **/
-static struct usb_midi_device *parse_descriptor( struct usb_device *d, unsigned char *buffer, int bufSize, unsigned int ifnum , unsigned int altSetting, int quirks)
-{
- struct usb_midi_device *u;
- unsigned char *p1;
- unsigned char *p2;
- unsigned char *next;
- int iep, oep;
- int length;
- unsigned long longBits;
- int pins, nbytes, offset, shift, jack;
-#ifdef HAVE_JACK_STRINGS
- /** Jacks can have associated names. **/
- unsigned char jack2string[256];
-#endif
-
- u = NULL;
- /* find audiocontrol interface */
- p1 = find_csinterface_descriptor( buffer, bufSize, NULL,
- MS_HEADER, ifnum, altSetting);
-
- if ( !p1 ) {
- goto error_end;
- }
-
- if ( p1[0] < MS_HEADER_LENGTH ) {
- goto error_end;
- }
-
- /* Assume success. Since the device corresponds to USB-MIDI spec, we assume
- that the rest of the USB 2.0 spec is obeyed. */
-
- u = (struct usb_midi_device *)kmalloc( sizeof(struct usb_midi_device), GFP_KERNEL );
- if ( !u ) {
- return NULL;
- }
- u->deviceName = NULL;
- u->idVendor = le16_to_cpu(d->descriptor.idVendor);
- u->idProduct = le16_to_cpu(d->descriptor.idProduct);
- u->interface = ifnum;
- u->altSetting = altSetting;
- u->in[0].endpoint = -1;
- u->in[0].cableId = -1;
- u->out[0].endpoint = -1;
- u->out[0].cableId = -1;
-
-
- printk(KERN_INFO "usb-midi: Found MIDIStreaming device corresponding to Release %d.%02d of spec.\n",
- (p1[4] >> 4) * 10 + (p1[4] & 0x0f ),
- (p1[3] >> 4) * 10 + (p1[3] & 0x0f )
- );
-
- length = p1[5] | (p1[6] << 8);
-
-#ifdef HAVE_JACK_STRINGS
- memset(jack2string, 0, sizeof(unsigned char) * 256);
-#endif
-
- length -= p1[0];
- for (p2 = p1 + p1[0]; length > 0; p2 = next) {
- next = p2 + p2[0];
- length -= p2[0];
-
- if (p2[0] < 2 )
- break;
- if (p2[1] != USB_DT_CS_INTERFACE)
- break;
- if (p2[2] == MIDI_IN_JACK && p2[0] >= 6 ) {
- jack = p2[4];
-#ifdef HAVE_JACK_STRINGS
- jack2string[jack] = p2[5];
-#endif
- printk(KERN_INFO "usb-midi: Found IN Jack 0x%02x %s\n",
- jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL" );
- } else if ( p2[2] == MIDI_OUT_JACK && p2[0] >= 6) {
- pins = p2[5];
- if ( p2[0] < (6 + 2 * pins) )
- continue;
- jack = p2[4];
-#ifdef HAVE_JACK_STRINGS
- jack2string[jack] = p2[5 + 2 * pins];
-#endif
- printk(KERN_INFO "usb-midi: Found OUT Jack 0x%02x %s, %d pins\n",
- jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL", pins );
- } else if ( p2[2] == ELEMENT_DESCRIPTOR && p2[0] >= 10) {
- pins = p2[4];
- if ( p2[0] < (9 + 2 * pins ) )
- continue;
- nbytes = p2[8 + 2 * pins ];
- if ( p2[0] < (10 + 2 * pins + nbytes) )
- continue;
- longBits = 0L;
- for ( offset = 0, shift = 0; offset < nbytes && offset < 8; offset ++, shift += 8) {
- longBits |= ((long)(p2[9 + 2 * pins + offset])) << shift;
- }
- jack = p2[3];
-#ifdef HAVE_JACK_STRINGS
- jack2string[jack] = p2[9 + 2 * pins + nbytes];
-#endif
- printk(KERN_INFO "usb-midi: Found ELEMENT 0x%02x, %d/%d pins in/out, bits: 0x%016lx\n",
- jack, pins, (int)(p2[5 + 2 * pins]), (long)longBits );
- } else {
- }
- }
-
- iep=0;
- oep=0;
-
- if (quirks==0) {
- /* MIDISTREAM */
- p2 = NULL;
- for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
- ifnum, altSetting ); p1; p1 = next ) {
- next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
- ifnum, altSetting );
- p2 = find_descriptor(buffer, bufSize, p1, USB_DT_CS_ENDPOINT,
- ifnum, altSetting );
-
- if ( p2 && next && ( p2 > next ) )
- p2 = NULL;
-
- if ( p1[0] < 9 || !p2 || p2[0] < 4 )
- continue;
-
- if ( (p1[2] & 0x80) == 0x80 ) {
- if ( iep < 15 ) {
- pins = p2[3]; /* not pins -- actually "cables" */
- if ( pins > 16 )
- pins = 16;
- u->in[iep].endpoint = p1[2];
- u->in[iep].cableId = ( 1 << pins ) - 1;
- if ( u->in[iep].cableId )
- iep ++;
- if ( iep < 15 ) {
- u->in[iep].endpoint = -1;
- u->in[iep].cableId = -1;
- }
- }
- } else {
- if ( oep < 15 ) {
- pins = p2[3]; /* not pins -- actually "cables" */
- if ( pins > 16 )
- pins = 16;
- u->out[oep].endpoint = p1[2];
- u->out[oep].cableId = ( 1 << pins ) - 1;
- if ( u->out[oep].cableId )
- oep ++;
- if ( oep < 15 ) {
- u->out[oep].endpoint = -1;
- u->out[oep].cableId = -1;
- }
- }
- }
-
- }
- } else if (quirks==1) {
- /* YAMAHA quirks */
- for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
- ifnum, altSetting ); p1; p1 = next ) {
- next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
- ifnum, altSetting );
-
- if ( p1[0] < 7 )
- continue;
-
- if ( (p1[2] & 0x80) == 0x80 ) {
- if ( iep < 15 ) {
- pins = iep+1;
- if ( pins > 16 )
- pins = 16;
- u->in[iep].endpoint = p1[2];
- u->in[iep].cableId = ( 1 << pins ) - 1;
- if ( u->in[iep].cableId )
- iep ++;
- if ( iep < 15 ) {
- u->in[iep].endpoint = -1;
- u->in[iep].cableId = -1;
- }
- }
- } else {
- if ( oep < 15 ) {
- pins = oep+1;
- u->out[oep].endpoint = p1[2];
- u->out[oep].cableId = ( 1 << pins ) - 1;
- if ( u->out[oep].cableId )
- oep ++;
- if ( oep < 15 ) {
- u->out[oep].endpoint = -1;
- u->out[oep].cableId = -1;
- }
- }
- }
-
- }
- }
-
- if ( !iep && ! oep ) {
- goto error_end;
- }
-
- return u;
-
-error_end:
- kfree(u);
- return NULL;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/** Returns number between 0 and 16.
- *
- **/
-static int on_bits( unsigned short v )
-{
- int i;
- int ret=0;
-
- for ( i=0 ; i<16 ; i++ ) {
- if ( v & (1<<i) )
- ret++;
- }
-
- return ret;
-}
-
-
-/** USB-device will be interrogated for altSetting.
- *
- * Returns negative on error.
- * Called by allocUsbMidiDev();
- *
- **/
-
-static int get_alt_setting( struct usb_device *d, int ifnum )
-{
- int alts, alt=0;
- struct usb_interface *iface;
- struct usb_host_interface *interface;
- struct usb_endpoint_descriptor *ep;
- int epin, epout;
- int i;
-
- iface = usb_ifnum_to_if( d, ifnum );
- alts = iface->num_altsetting;
-
- for ( alt=0 ; alt<alts ; alt++ ) {
- interface = &iface->altsetting[alt];
- epin = -1;
- epout = -1;
-
- for ( i=0 ; i<interface->desc.bNumEndpoints ; i++ ) {
- ep = &interface->endpoint[i].desc;
- if ( (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ) {
- continue;
- }
- if ( (ep->bEndpointAddress & USB_DIR_IN) && epin < 0 ) {
- epin = i;
- } else if ( epout < 0 ) {
- epout = i;
- }
- if ( epin >= 0 && epout >= 0 ) {
- return interface->desc.bAlternateSetting;
- }
- }
- }
-
- return -ENODEV;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-
-/** Returns 0 if successful in allocating and registering internal structures.
- * Returns negative on failure.
- * Calls allocMidiDev which additionally registers /dev/midiXX devices.
- * Writes messages on success to indicate which /dev/midiXX is which physical
- * endpoint.
- *
- **/
-static int alloc_usb_midi_device( struct usb_device *d, struct usb_midi_state *s, struct usb_midi_device *u )
-{
- struct usb_mididev **mdevs=NULL;
- struct midi_in_endpoint *mins[15], *min;
- struct midi_out_endpoint *mouts[15], *mout;
- int inDevs=0, outDevs=0;
- int inEndpoints=0, outEndpoints=0;
- int inEndpoint, outEndpoint;
- int inCableId, outCableId;
- int i;
- int devices = 0;
- int alt = 0;
-
- /* Obtain altSetting or die.. */
- alt = u->altSetting;
- if ( alt < 0 ) {
- alt = get_alt_setting( d, u->interface );
- }
- if ( alt < 0 )
- return -ENXIO;
-
- /* Configure interface */
- if ( usb_set_interface( d, u->interface, alt ) < 0 ) {
- return -ENXIO;
- }
-
- for ( i = 0 ; i < 15 ; i++ ) {
- mins[i] = NULL;
- mouts[i] = NULL;
- }
-
- /* Begin Allocation */
- while( inEndpoints < 15
- && inDevs < maxdevices
- && u->in[inEndpoints].cableId >= 0 ) {
- inDevs += on_bits((unsigned short)u->in[inEndpoints].cableId);
- mins[inEndpoints] = alloc_midi_in_endpoint( d, u->in[inEndpoints].endpoint );
- if ( mins[inEndpoints] == NULL )
- goto error_end;
- inEndpoints++;
- }
-
- while( outEndpoints < 15
- && outDevs < maxdevices
- && u->out[outEndpoints].cableId >= 0 ) {
- outDevs += on_bits((unsigned short)u->out[outEndpoints].cableId);
- mouts[outEndpoints] = alloc_midi_out_endpoint( d, u->out[outEndpoints].endpoint );
- if ( mouts[outEndpoints] == NULL )
- goto error_end;
- outEndpoints++;
- }
-
- devices = inDevs > outDevs ? inDevs : outDevs;
- devices = maxdevices > devices ? devices : maxdevices;
-
- /* obtain space for device name (iProduct) if not known. */
- if ( ! u->deviceName ) {
- mdevs = (struct usb_mididev **)
- kmalloc(sizeof(struct usb_mididevs *)*devices
- + sizeof(char) * 256, GFP_KERNEL);
- } else {
- mdevs = (struct usb_mididev **)
- kmalloc(sizeof(struct usb_mididevs *)*devices, GFP_KERNEL);
- }
-
- if ( !mdevs ) {
- /* devices = 0; */
- /* mdevs = NULL; */
- goto error_end;
- }
- for ( i=0 ; i<devices ; i++ ) {
- mdevs[i] = NULL;
- }
-
- /* obtain device name (iProduct) if not known. */
- if ( ! u->deviceName ) {
- u->deviceName = (char *) (mdevs + devices);
- if ( ! d->have_langid && d->descriptor.iProduct) {
- alt = usb_get_string(d, 0, 0, u->deviceName, 250);
- if (alt < 0) {
- printk(KERN_INFO "error getting string descriptor 0 (error=%d)\n", alt);
- } else if (u->deviceName[0] < 4) {
- printk(KERN_INFO "string descriptor 0 too short (length = %d)\n", alt);
- } else {
- printk(KERN_INFO "string descriptor 0 found (length = %d)\n", alt);
- for(; alt >= 4; alt -= 2) {
- i = u->deviceName[alt-2] | (u->deviceName[alt-1]<< 8);
- printk(KERN_INFO "usb-midi: langid(%d) 0x%04x\n",
- (alt-4) >> 1, i);
- if ( ( ( i ^ ulangid ) & 0xff ) == 0 ) {
- d->have_langid = 1;
- d->string_langid = i;
- printk(KERN_INFO "usb-midi: langid(match) 0x%04x\n", i);
- if ( i == ulangid )
- break;
- }
- }
- }
- }
- u->deviceName[0] = (char) 0;
- if (d->descriptor.iProduct) {
- printk(KERN_INFO "usb-midi: fetchString(%d)\n", d->descriptor.iProduct);
- alt = usb_string(d, d->descriptor.iProduct, u->deviceName, 255);
- if( alt < 0 ) {
- u->deviceName[0] = (char) 0;
- }
- printk(KERN_INFO "usb-midi: fetchString = %d\n", alt);
- }
- /* Failsafe */
- if ( !u->deviceName[0] ) {
- if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_ROLAND ) {
- strcpy(u->deviceName, "Unknown Roland");
- } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_STEINBERG ) {
- strcpy(u->deviceName, "Unknown Steinberg");
- } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_YAMAHA ) {
- strcpy(u->deviceName, "Unknown Yamaha");
- } else {
- strcpy(u->deviceName, "Unknown");
- }
- }
- }
-
- inEndpoint = 0; inCableId = -1;
- outEndpoint = 0; outCableId = -1;
-
- for ( i=0 ; i<devices ; i++ ) {
- for ( inCableId ++ ;
- inEndpoint <15
- && mins[inEndpoint]
- && !(u->in[inEndpoint].cableId & (1<<inCableId)) ;
- inCableId++ ) {
- if ( inCableId >= 16 ) {
- inEndpoint ++;
- inCableId = 0;
- }
- }
- min = mins[inEndpoint];
- for ( outCableId ++ ;
- outEndpoint <15
- && mouts[outEndpoint]
- && !(u->out[outEndpoint].cableId & (1<<outCableId)) ;
- outCableId++ ) {
- if ( outCableId >= 16 ) {
- outEndpoint ++;
- outCableId = 0;
- }
- }
- mout = mouts[outEndpoint];
-
- mdevs[i] = allocMidiDev( s, min, mout, inCableId, outCableId );
- if ( mdevs[i] == NULL )
- goto error_end;
-
- }
-
- /* Success! */
- for ( i=0 ; i<devices ; i++ ) {
- list_add_tail( &mdevs[i]->list, &s->midiDevList );
- }
- for ( i=0 ; i<inEndpoints ; i++ ) {
- list_add_tail( &mins[i]->list, &s->inEndpointList );
- }
- for ( i=0 ; i<outEndpoints ; i++ ) {
- list_add_tail( &mouts[i]->list, &s->outEndpointList );
- }
-
- printk(KERN_INFO "usbmidi: found [ %s ] (0x%04x:0x%04x), attached:\n", u->deviceName, u->idVendor, u->idProduct );
- for ( i=0 ; i<devices ; i++ ) {
- int dm = (mdevs[i]->dev_midi-2)>>4;
- if ( mdevs[i]->mout.ep != NULL && mdevs[i]->min.ep != NULL ) {
- printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%2d) out (ep:%02x cid:%2d bufsiz:%2d)\n",
- dm,
- mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize,
- mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
- } else if ( mdevs[i]->min.ep != NULL ) {
- printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%02d)\n",
- dm,
- mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize);
- } else if ( mdevs[i]->mout.ep != NULL ) {
- printk(KERN_INFO "usbmidi: /dev/midi%02d: out (ep:%02x cid:%2d bufsiz:%02d)\n",
- dm,
- mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
- }
- }
-
- kfree(mdevs);
- return 0;
-
- error_end:
- if ( mdevs != NULL ) {
- for ( i=0 ; i<devices ; i++ ) {
- if ( mdevs[i] != NULL ) {
- unregister_sound_midi( mdevs[i]->dev_midi );
- kfree(mdevs[i]);
- }
- }
- kfree(mdevs);
- }
-
- for ( i=0 ; i<15 ; i++ ) {
- if ( mins[i] != NULL ) {
- remove_midi_in_endpoint( mins[i] );
- }
- if ( mouts[i] != NULL ) {
- remove_midi_out_endpoint( mouts[i] );
- }
- }
-
- return -ENOMEM;
-}
-
-/* ------------------------------------------------------------------------- */
-
-/** Attempt to scan YAMAHA's device descriptor and detect correct values of
- * them.
- * Return 0 on succes, negative on failure.
- * Called by usb_midi_probe();
- **/
-
-static int detect_yamaha_device( struct usb_device *d,
- struct usb_interface *iface, unsigned int ifnum,
- struct usb_midi_state *s)
-{
- struct usb_host_interface *interface;
- struct usb_midi_device *u;
- unsigned char *buffer;
- int bufSize;
- int i;
- int alts=-1;
- int ret;
-
- if (le16_to_cpu(d->descriptor.idVendor) != USB_VENDOR_ID_YAMAHA) {
- return -EINVAL;
- }
-
- for ( i=0 ; i < iface->num_altsetting; i++ ) {
- interface = iface->altsetting + i;
-
- if ( interface->desc.bInterfaceClass != 255 ||
- interface->desc.bInterfaceSubClass != 0 )
- continue;
- alts = interface->desc.bAlternateSetting;
- }
- if ( alts == -1 ) {
- return -EINVAL;
- }
-
- printk(KERN_INFO "usb-midi: Found YAMAHA USB-MIDI device on dev %04x:%04x, iface %d\n",
- le16_to_cpu(d->descriptor.idVendor),
- le16_to_cpu(d->descriptor.idProduct), ifnum);
-
- i = d->actconfig - d->config;
- buffer = d->rawdescriptors[i];
- bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
-
- u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 1);
- if ( u == NULL ) {
- return -EINVAL;
- }
-
- ret = alloc_usb_midi_device( d, s, u );
-
- kfree(u);
-
- return ret;
-}
-
-
-/** Scan table of known devices which are only partially compliant with
- * the MIDIStreaming specification.
- * Called by usb_midi_probe();
- *
- **/
-
-static int detect_vendor_specific_device( struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s )
-{
- struct usb_midi_device *u;
- int i;
- int ret = -ENXIO;
-
- for ( i=0; i<VENDOR_SPECIFIC_USB_MIDI_DEVICES ; i++ ) {
- u=&(usb_midi_devices[i]);
-
- if ( le16_to_cpu(d->descriptor.idVendor) != u->idVendor ||
- le16_to_cpu(d->descriptor.idProduct) != u->idProduct ||
- ifnum != u->interface )
- continue;
-
- ret = alloc_usb_midi_device( d, s, u );
- break;
- }
-
- return ret;
-}
-
-
-/** Attempt to match any config of an interface to a MIDISTREAMING interface.
- * Returns 0 on success, negative on failure.
- * Called by usb_midi_probe();
- **/
-static int detect_midi_subclass(struct usb_device *d,
- struct usb_interface *iface, unsigned int ifnum,
- struct usb_midi_state *s)
-{
- struct usb_host_interface *interface;
- struct usb_midi_device *u;
- unsigned char *buffer;
- int bufSize;
- int i;
- int alts=-1;
- int ret;
-
- for ( i=0 ; i < iface->num_altsetting; i++ ) {
- interface = iface->altsetting + i;
-
- if ( interface->desc.bInterfaceClass != USB_CLASS_AUDIO ||
- interface->desc.bInterfaceSubClass != USB_SUBCLASS_MIDISTREAMING )
- continue;
- alts = interface->desc.bAlternateSetting;
- }
- if ( alts == -1 ) {
- return -EINVAL;
- }
-
- printk(KERN_INFO "usb-midi: Found MIDISTREAMING on dev %04x:%04x, iface %d\n",
- le16_to_cpu(d->descriptor.idVendor),
- le16_to_cpu(d->descriptor.idProduct), ifnum);
-
-
- /* From USB Spec v2.0, Section 9.5.
- If the class or vendor specific descriptors use the same format
- as standard descriptors (e.g., start with a length byte and
- followed by a type byte), they must be returned interleaved with
- standard descriptors in the configuration information returned by
- a GetDescriptor(Configuration) request. In this case, the class
- or vendor-specific descriptors must follow a related standard
- descriptor they modify or extend.
- */
-
- i = d->actconfig - d->config;
- buffer = d->rawdescriptors[i];
- bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
-
- u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 0);
- if ( u == NULL ) {
- return -EINVAL;
- }
-
- ret = alloc_usb_midi_device( d, s, u );
-
- kfree(u);
-
- return ret;
-}
-
-
-/** When user has requested a specific device, match it exactly.
- *
- * Uses uvendor, uproduct, uinterface, ualt, umin, umout and ucable.
- * Called by usb_midi_probe();
- *
- **/
-static int detect_by_hand(struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s)
-{
- struct usb_midi_device u;
-
- if ( le16_to_cpu(d->descriptor.idVendor) != uvendor ||
- le16_to_cpu(d->descriptor.idProduct) != uproduct ||
- ifnum != uinterface ) {
- return -EINVAL;
- }
-
- if ( ualt < 0 )
- ualt = -1;
-
- if ( umin < 0 || umin > 15 )
- umin = 0x01 | USB_DIR_IN;
- if ( umout < 0 || umout > 15 )
- umout = 0x01;
- if ( ucable < 0 || ucable > 15 )
- ucable = 0;
-
- u.deviceName = NULL; /* A flag for alloc_usb_midi_device to get device
- name from device. */
- u.idVendor = uvendor;
- u.idProduct = uproduct;
- u.interface = uinterface;
- u.altSetting = ualt;
-
- u.in[0].endpoint = umin;
- u.in[0].cableId = (1<<ucable);
-
- u.out[0].endpoint = umout;
- u.out[0].cableId = (1<<ucable);
-
- return alloc_usb_midi_device( d, s, &u );
-}
-
-
-
-/* ------------------------------------------------------------------------- */
-
-static int usb_midi_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- struct usb_midi_state *s;
- struct usb_device *dev = interface_to_usbdev(intf);
- int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
-
- s = (struct usb_midi_state *)kmalloc(sizeof(struct usb_midi_state), GFP_KERNEL);
- if ( !s )
- return -ENOMEM;
-
- memset( s, 0, sizeof(struct usb_midi_state) );
- INIT_LIST_HEAD(&s->midiDevList);
- INIT_LIST_HEAD(&s->inEndpointList);
- INIT_LIST_HEAD(&s->outEndpointList);
- s->usbdev = dev;
- s->count = 0;
- spin_lock_init(&s->lock);
-
- if (
- detect_by_hand( dev, ifnum, s ) &&
- detect_midi_subclass( dev, intf, ifnum, s ) &&
- detect_vendor_specific_device( dev, ifnum, s ) &&
- detect_yamaha_device( dev, intf, ifnum, s) ) {
- kfree(s);
- return -EIO;
- }
-
- down(&open_sem);
- list_add_tail(&s->mididev, &mididevs);
- up(&open_sem);
-
- usb_set_intfdata (intf, s);
- return 0;
-}
-
-
-static void usb_midi_disconnect(struct usb_interface *intf)
-{
- struct usb_midi_state *s = usb_get_intfdata (intf);
- struct usb_mididev *m;
-
- if ( !s )
- return;
-
- if ( s == (struct usb_midi_state *)-1 ) {
- return;
- }
- if ( !s->usbdev ) {
- return;
- }
- down(&open_sem);
- list_del(&s->mididev);
- INIT_LIST_HEAD(&s->mididev);
- s->usbdev = NULL;
- usb_set_intfdata (intf, NULL);
-
- list_for_each_entry(m, &s->midiDevList, list) {
- wake_up(&(m->min.ep->wait));
- wake_up(&(m->mout.ep->wait));
- if ( m->dev_midi >= 0 ) {
- unregister_sound_midi(m->dev_midi);
- }
- m->dev_midi = -1;
- }
- release_midi_device(s);
- wake_up(&open_wait);
-}
-
-/* we want to look at all devices by hand */
-static struct usb_device_id id_table[] = {
- {.driver_info = 42},
- {}
-};
-
-static struct usb_driver usb_midi_driver = {
- .name = "midi",
- .probe = usb_midi_probe,
- .disconnect = usb_midi_disconnect,
- .id_table = id_table,
-};
-
-/* ------------------------------------------------------------------------- */
-
-static int __init usb_midi_init(void)
-{
- return usb_register(&usb_midi_driver);
-}
-
-static void __exit usb_midi_exit(void)
-{
- usb_deregister(&usb_midi_driver);
-}
-
-module_init(usb_midi_init) ;
-module_exit(usb_midi_exit) ;
-
-#ifdef HAVE_ALSA_SUPPORT
-#define SNDRV_MAIN_OBJECT_FILE
-#include "../../include/driver.h"
-#include "../../include/control.h"
-#include "../../include/info.h"
-#include "../../include/cs46xx.h"
-
-/* ------------------------------------------------------------------------- */
-
-static int snd_usbmidi_input_close(snd_rawmidi_substream_t * substream)
-{
- return 0;
-}
-
-static int snd_usbmidi_input_open(snd_rawmidi_substream_t * substream )
-{
- return 0;
-}
-
-static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t * substream, int up)
-{
- return 0;
-}
-
-
-/* ------------------------------------------------------------------------- */
-
-static int snd_usbmidi_output_close(snd_rawmidi_substream_t * substream)
-{
- return 0;
-}
-
-static int snd_usbmidi_output_open(snd_rawmidi_substream_t * substream)
-{
- return 0;
-}
-
-static void snd_usb_midi_output_trigger(snd_rawmidi_substream_t * substream,
- int up)
-{
- return 0;
-}
-
-/* ------------------------------------------------------------------------- */
-
-static snd_rawmidi_ops_t snd_usbmidi_output =
-{
- .open = snd_usbmidi_output_open,
- .close = snd_usbmidi_output_close,
- .trigger = snd_usbmidi_output_trigger,
-};
-static snd_rawmidi_ops_t snd_usbmidi_input =
-{
- .open = snd_usbmidi_input_open,
- .close = snd_usbmidi_input_close,
- .trigger = snd_usbmidi_input_trigger,
-};
-
-int snd_usbmidi_midi(cs46xx_t *chip, int device, snd_rawmidi_t **rrawmidi)
-{
- snd_rawmidi_t *rmidi;
- int err;
-
- if (rrawmidi)
- *rrawmidi = NULL;
- if ((err = snd_rawmidi_new(chip->card, "USB-MIDI", device, 1, 1, &rmidi)) < 0)
- return err;
- strcpy(rmidi->name, "USB-MIDI");
-
- snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output );
- snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input );
-
- rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
-
- rmidi->private_data = chip;
- chip->rmidi = rmidi;
- if (rrawmidi)
- *rrawmidi = NULL;
-
- return 0;
-}
-
-int snd_usbmidi_create( snd_card_t * card,
- struct pci_dev * pci,
- usbmidi_t ** rchip )
-{
- usbmidi_t *chip;
- int err, idx;
- snd_region_t *region;
- static snd_device_opt_t ops = {
- .dev_free = snd_usbmidi_dev_free,
- };
-
- *rchip = NULL;
- chip = snd_magic_kcalloc( usbmidi_t, 0, GFP_KERNEL );
- if ( chip == NULL )
- return -ENOMEM;
-}
-
-EXPORT_SYMBOL(snd_usbmidi_create);
-EXPORT_SYMBOL(snd_usbmidi_midi);
-#endif /* HAVE_ALSA_SUPPORT */
-